Detector-controlled gluing mechanism



LE GRAND L'. CLARK. DETECTOR CONTROLLI-ID GLUING MECHANISM.

APPLIJCATION FILED NOV. I4, 1919.

' Patenasept. 27, 1921.- n

50V the gluefroll.

' Aum1"'| 5:| STATES 'P'Afn-:NT OFFICE.

Ln GRAND I.. cLAzax, or NEW Yonx,

N. Y., ASSIGNOR F ONE-HALF T0 THE' SHEBI- DAN IRON 'WORKS,`A. .CORPORATION 0F `NEW YORK, AND ONE-HALF '.lO'T.V W. C. B. SHERIDAIN COMPANY, A CORPORATION 0F NEW YORK.

To all 'ivhom't may conm.f" y y Be it known that I, La GnANDL. CLARK, ,a citizen of the United States, residing at New vYork lin the countyofpNew York and State of York, have invented; certain new and 'useful Im rovementslin Detector- Controlled Gluing lechanism, of which the following is a specification, reference being had therein to the accompa'lfying drawing. This invention is a novell detector" controlled luing mechanism, andthe principles of th'e inventionareherein shown applied to a machine fory gluing together t e *component parts lofbooks or pamphlets, for example,ffor'g1uilig theexterior papersheet or cover in jplace, although ',the ,rinciples could lbe used on analogous vmaciiines for treating similaryarticles forexample, for gluing together two sheets'of paper, lconstitutlng'a newspaper orffolder, ratherv than a book or pamp let., l i As 'indicated by thetitle' of this invention, i'tstmain'object is to provide a gluing mechanism controlled b a detector, so that on the absence ofone ofy example, when to be fed, thisfwilljoperateto prevent the application of glue',- andtherefore to pre-` vent Athe'fmechar'lical' parts ofthe machine becoming ysmearedfwith glue',-which would quickly render the machine unfit Afor ,practicaliise. I will show vthe invention applied to l the' general type of bookbinding or coverimrg f mac i 1.0723324;l and 1,248,252. In "'th'ese patents the successive f books I' are; carried 'along a horizontal path in'- a'trainor procession adA vanc'ing to theyarious mechanisms, including' thegluing-.mechanismand Ithe cover 40 sheet a 'plyingjInec'hanisin.'l VThe book 'isi )la and the glue tioned patent-the gl'' 'a 'plying'device-i's bodilydropp'ed-at the en o'f each book'or luing'operation and lifted for th-e next one.. h earlier patent of Hull 534,219 likewise employed the plan of dropping 'l and raising '4 1de not hereimclaim 'to' be `the rstljto employ a detector,with cnnectingfm'e'ohai nism, for Vpreventing the appllcatlon of 'glue when a 'sheet or analogous object failsto be i Specification of Letters Patent. appuo'afioe meafnbymber 14,1919. serial .the component parts, for a sheet is missing and fails ne fshow'n". lin vBreden'ber'g' Patents' Dnrnoronfconrnonnnn entrino nner-ramen.

. Patented Sept. 27, 1921. No. 338,021.

fed,yand indeed the prior patent of Bascom No. 551,918 shows such a mechanism, the broad principles of which are a plicable to the present purposes. Itis an object of the present invention to afford a detector controlled gluing mechanism of the same general nature as that of Bascom, but specifically improved and adapted to the uses herein disclosed. Other objects and advantages of the present invention will appear in the hereinafter following description of one form or embodiment thereof, or will be understood to those skilled in the art? To the accomplishment of such objects and advantages the present invention consists in f' the novel detector controlled gluing mechanismv and the novel features of combination, construction, arrangement and detail herein shown, described or claimed.

Figure 1 'of thel drawings may be considered as a more or less diagrammatic side elevation of a machine for gluing covers to books, embodying the principles of the presi ent invention.4

Flg. 2 is a partial right elevation of the A detector and 'associated' parts.

Along ixed guides 5 travels an endless train of clamps 6, each of which holds a book B with the back ed e' of the book downwardly. Each book, a er passing from any preliminary treatments, lcomes next to the g uing mechanism shownat the left, and then tothe cover applying mechanism at the right of the lfigure of the drawings. The gluing mechanism applies glue to the back of each book, and the covering mechanlsm thereupon applies acover. A succession of paper sheets or covers C, C, C, C, is shown,l

commg from any suitable cover sliply, such as the well known paper feeder.` ach cover passes upwardly toward the path of the books. between lower and uppertapes 7 and 8, an these tapes near the top throw the cover onto a platen or reciprocating table 9, w ich receives the covers one at a time, and rising applies them to the glued backs of the books, in a manner more fully described in said rior Patent 1 8,252.

Theg ue applying evice com rises a glue roll 10, driven by a belt 11,'an running in the glue within a vessel 12. When elevated thegluing` device is. in such position that the book'moves along over the rotating roll and receives glue along itslength. Instead l of these parts being fixed in position, the

glue vessel is here shown mounted to move ipland down, for example, about a pivot 13.

e means` for moving it down and up is associated with and will be described in connection with the detector and detector controlled mechanism.

The mechanism hereof comprises the glue applying device, adapted to rise to the point where t e glue is to be applied, and to descend to an inoperative position, in combination with a yielding means such as a spring or a counterweight or the like, tending always to overbalance or lift the glue device to its operative position, timed lconnections, such asa cam, acting after each gluing operation for causing the glue device to descend to its inoperative position, and then allowing it to rise for the next operation, a normally inoperative lock device adapted to act at the time when the gluing device is in its lowered position, for holding it rdown against the lifting tendency of the s ring or counterweight,`and together with t ese elements detector-controlled 'connections adapted for rendering operative the lock device, and thereby 'preventing' any given gluing operation, all without stopthe machina pin 'lille free or movable end of the glue vesv sel rests upon a connection or stud 14, which has ahead 15 cooperating with a fixed frame part 16 Ato vform a stop limiting Vthe downward movement of the vessel.

The `connection 14 in turn rests upon the rightward' arm 17 of a 1ever,.havng also leftwa'rd arm 18 and upward arm 1-9. The connection 14 acts substantially asia link between the vessel 12 and lever arnli 17, the weight of the vessel being such that the connection is substantially positive, the parts always mov-V v ing up and down' in absolute unison.

As a yielding means .tending to lift the glue device `to itsOperative position, I prefer a spring 20, although a counterwei ht indicated at 21 might be employed. he spring is fpreferably arranged to ull down on the 1e tward lever arm 18, alt ough obviou'sly it could pull up on the rightward arm 1 orleftward on the upward arm 19 to the same eect, namely, to overbalance the glue device, giving ita tendency to rise.'

he limit ofv upward movement may be determined b 'asuitable stop, for example, bythe dwel portion ofthe cam to be described.

The parts the gluing Adevice `in'j'elevated or operative position. In order to cause the glue. device to, descend periodically, I provide timed connections which may take vvariousl forms,

but are shown as including one of the operating shafts 22 of' the machine, `the same carrying a cam 23 havingan active portion 24 and a dwell 25. soarranged as to cothii's described normally hold in time with the' remainder of the machine,

making,'for instance, one rotation for the advance of each book, and the cam is timed on the shaft so as to thrustdown the glue device at the completion of the operation of gluing one book, and to allow it to rise for the next book or operation.` The cam does not act to force the glue device up. This is left solely to the yielding means, spring or counterweight.

The parts as thus far described would operate to apply glue to each book, the glue vessel lowering between operations. It will be perceived that, when the glue vessel is in its lower position, it is possible to lock orhold it there, since there is nopositive or cam lifting action. In order, therefore, to

prevent any given gluing operation, I provide a lock device consisting of a hooked arm` 27, pivoted at 28 on a low portion of the machine frame, and having a hook 29 at its upper end, normally inoperative, but adapt- -ed to swing over the lug or stud 30 on the lever arm 17. These parts might be relatively dierently arranged, so long as when operated'they serve to hold the threefarined lever, and therefore, the glue device, in-the inoperative position shown.

yIt only remains to control the lock device 27 by the fed sheets or covers. ThisV is hereinaccoinplishedb means of a swinging detector 31, pivote at 32, and pulled upon lightly by a s ring 33, somas to bear y ainst the left or un erside of the ascending s eets. As long las a proper succession of's'heetsv com tinues, the detector 31 will alwaysibe held in the-position shown in the drawings. l3nt if, by chance, a sheet is missing, the detector 31` is permitted to swing to the right under. the influence of the spring- 33.4 A simple link 34 transmits this'motion to the hook or lock 27, whichit will be noticed is delicately. poised. The result is that, whena sheet is missing, the lock is swung from its, shown position toward the r' ht, sov that, whenI the glue device is lowere and inoperative, the

hook 2 9 mayvswing overthe lug 30, and thus v lock the parts in inoperative position, The cam 2 3 will make a complete rotation with the follower 26 heldwholly away from the ca m until the active cam portion24 again comes to ,position'. It will then contact the roller 26 and slightly ace the parts suf-. 'iciently to separate the ook 29 and lug 30 to'a. degree to permit -the former to readily swing to the left 'as the detector 31 is swung to the left with the coming along of the next sheet of paper. In this way, by Simple andv easily maintained mechanism, the application of vglue is preventedwhen the sheet is missing and the smearing of glue uponl the platen -9 and other parts of the machine will be prevented. l

y I believe it new herein to provide an overbalanced glue device or vessel, its .tendency to rise being limited, together with an automatic means to depress the vessel after each gluing operation, and a hook o r lock to hold` it down on certain occasions to prevent one or more gluing operations.

It will thus be seen that I have described a detector controlled gluing mechanism embodying the principles of the present invenfaces of the articles, means for conducting the sheets successivelyto the point of application, a glue applying device adapted. to apply 'glue to the under side of each article before the application of a sheet thereto, the

same adapted to rise to the article to be glued and to descend to`an inoperative'posit'ion, a yielding means tending to lift the glue device'to operative position, timed connections acting after each gluing operation for causing ".the glue device to descend to it to rise y inoperative position and allowi for the next operation,a normal y inopera-V tive lock device adapted to act when the gluing device'is'in its lowered Aposition for holding it down against the lifting tendency ofsaid yielding means and detector-actuated connections, controlled b the presence .of the sheets in said. sheet con noting means,

adapted for rendering operative said lock device, and thereby preventing the applica-Y tion of glue to the article when the corresponding sheet is missing, without stopping the machine.

2. In combination, means for conveying books or analogous articles with the under surface thereof exposed,'means for a plying covers or sheets to the exposed un er surfaces of the articleaineans for conducting the sheets successively to the point of application, a4 glue applying device adapted to apply glue to the under side of each article before the application of a sheet thereto, the same being voverbalanced to give it a tendency to rise to the article to be glued but,v

permitting it to be lowered to an inoperative position, a timed actuator acting 'after each gluing operation for causing the glue device to descend to inoperative position and allowing it to rise for the next operation, a lock member adapted to operate when the gluing device is in its lowered position for holding it down against its lifting tendency, and sheet; controlled connections adapted for rendering operative said lock device and thereby preventing gluing when the sheet is missing.

In testimony whereof, I have aixed my signature hereto. l y LE GRAND L. CLARK; 

